ZyXEL Communications NBG-418N v2 User Manual

Page of 228
NBG-418N v2 User’s Guide
142
C
H A P T E R
      2 1
Troubleshooting
This chapter offers some suggestions to solve problems you might encounter. The potential 
problems are divided into the following categories. 
21.1  Power, Hardware Connections, and LEDs
The NBG-418N v2 does not turn on. None of the LEDs turn on.
1
Make sure you are using the power adaptor or cord included with the NBG-418N v2.
2
Make sure the power adaptor or cord is connected to the NBG-418N v2 and plugged in to an 
appropriate power source. Make sure the power source is turned on.
3
Disconnect and re-connect the power adaptor or cord to the NBG-418N v2.
4
If the problem continues, contact the vendor.
One of the LEDs does not behave as expected.
1
Make sure you understand the normal behavior of the LED. See 
.
2
Check the hardware connections. See the Quick Start Guide. 
3
Inspect your cables for damage. Contact the vendor to replace any damaged cables.
4
Disconnect and re-connect the power adaptor to the NBG-418N v2. 
5
If the problem continues, contact the vendor.